I had that on a completely different VW Group car, a VW Passat 4Motion 2000, which like the earlier MK1 Superb were just some old Audi bits as far as the drive train was concerned, so being a pessimist, I thought "gearbox/diff" so handed it in after swopping wheels around, with a very heavy heart, the noise that car made, and started making quite quickly from being very quiet, was more of a wah wah like older army trucks with off road (mainly) tyres, luckily it was only a front wheel bearing so I got both sides replaced, noises gone, I never ever tried driving through that noise, I just used it as little as possible until I could get it "seen to", mileage at that time was probably near 75K miles/9years old.
My wife's 2015 VW Polo 1.2TSI 110PS, started making "bearing noises" when it was only over 6 years old and 30/35K miles, as I initially hoped it was uneven tyre wear, but when it came time to change from directional winter tyres to summer tyres the noise unfortunately did not go away! I did keep running it and yes, I could easily drive through that noisy band of road speed, it was just a hum that could easily be "got rid of" by turning the radio on and up a bit, I replaced both front bearing assembles and that sorted that out.
Edit:- that can be the reality of running a 4WD car, always start with the worst possible source of the noise, I've only ever had, as my car, a 4WD car for the past 30 years and never yet had any "4WD" related issues.